Current hashrate 4 049 948 264 ie. 4.05 GH/s, yours 0.55 MH/s is 0.0001358 ish of net hashrate, meaning if there is currently 23 block reward with around 576 blocks per day, your portion of all 13 248 coins mined per day will be
1,8 coins (13 248 * 0.0001358 = 1,799)

but only if HR wont change..